초록 ▼

The present invention relates to an improved displacement device (1) for controlled dispensing of a dose of a liquid contained in a cartridge (40), the displacement device (1) comprises a housing (5) incorporating: a mechanism (6) for accommodating the cartridge (40), a manually activatable displace

The present invention relates to an improved displacement device (1) for controlled dispensing of a dose of a liquid contained in a cartridge (40), the displacement device (1) comprises a housing (5) incorporating: a mechanism (6) for accommodating the cartridge (40), a manually activatable displaceable elongated dose dispensing device (20), the elongated dose dispensing device (20) having a first end part (22) extending to the exterior of the housing (5), an elongated piston rod (30) connected with a displaceable piston (32), the piston (32) being adapted to press out the liquid contained in the cartridge (40), and the piston rod (30) having a plurality of transversely extending teeth (25) arranged along its length, a toothed displacing mechanism (14), and a user-operated dose setting mechanism (8,10,12), the user-operated dose setting mechanism (8,10,12) and the toothed displacing mechanism (14) are operatively connected to cause movement of the toothed displacing mechanism (14) in response to the operation of the dose setting mechanism (8,10,12), pinion mechanism (35) having a shaft (37), being rotatably secured to the elongated dose dispensing device (20), the pinion mechanism (35) being arranged to engage the teeth of the toothed displacing mechanism (14) and the teeth (25) of the piston rod (30).

대표청구항 ▼

[ I claim:] [1.] A displacement device (1) for controlled dispensing of a dose of a liquid contained in a cartridge (40), said displacement device (1) comprising a housing (5) incorporating:a means (6) for accommodating said cartridge (40),a manually activatable displaceable elongated dose dispensin

[ I claim:] [1.] A displacement device (1) for controlled dispensing of a dose of a liquid contained in a cartridge (40), said displacement device (1) comprising a housing (5) incorporating:a means (6) for accommodating said cartridge (40),a manually activatable displaceable elongated dose dispensing means (20),said elongated dose dispensing means (20) having a first end part (22) extending to the exterior of the housing (5),an elongated piston rod (30) connected with a displaceable piston (32),said piston (32) being adapted to press out the liquid contained in said cartridge (40), andsaid elongated piston rod (30) having a plurality of transversely extending teeth (25) arranged along its length,a toothed displacing means (14),a user-operated dose setting means (8,10,12),said user-operated dose setting means (8,10,12) and said toothed displacing means (14) being operatively connected to cause movement of said toothed displacing means (14) in response to the operation of the dose setting means (8,10,12),pinion means (35) having a shaft (37),said pinion means (35) being rotatably secured to said elongated dose dispensing means (20),said pinion means (35) being arranged to engage the teeth of said toothed displacing means (14) and the teeth (25) of the piston rod (30).